Writing board



FIG. 1 is a front view of a writing board;

FIG. 2 is a side view thereof;

FIG. 3 is an opposite side view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a back view thereof; and,

FIG. 7 is a front perspective view thereof. 

CLAIM The ornamental design for a writing board, as shown and described. 